﻿//-----------------------------------------------------------------------
// <copyright file="SettingsSystem.cs" company="Nathan Miller">
// Copyright (c) Nathan Miller.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
//-----------------------------------------------------------------------
namespace TileTool.Settings
{
    using System;

    /// <summary>
    /// Static class which holds the global settings manager instance.
    /// 
    /// If the settings manager instance has not been set and it is accessed,
    /// an exception will be thrown.
    /// </summary>
    public static class SettingsSystem
    {
        #region Fields - Private

        /// <summary>
        /// Settings manager instance.
        /// </summary>
        private static ISettingsManager manager = null;

        #endregion

        #region Properties - Public

        /// <summary>
        /// Gets or sets the settings manager instance.
        /// </summary>
        public static ISettingsManager Manager
        {
            get
            {
                if (manager == null)
                {
                    throw new InvalidOperationException("Settings manager instance must be set before the class can be used.");
                }

                return manager;
            }

            set
            {
                manager = value;
            }
        }

        #endregion

        #region Methods - Public

        /// <summary>
        /// Get a settings object of the passed type.
        /// </summary>
        /// <typeparam name="T">Type of settings object to get.</typeparam>
        /// <returns>Returns the settings object.</returns>
        public static T Get<T>() where T : class, ISettings, new()
        {
            return Manager.Get<T>();
        }

        /// <summary>
        /// Reset all settings objects.
        /// </summary>
        public static void ResetAll()
        {
            Manager.ResetAll();
        }

        /// <summary>
        /// Reset the passed settings type.
        /// </summary>
        /// <typeparam name="T">Settings type to reset.</typeparam>
        public static void Reset<T>() where T : class, ISettings, new()
        {
            Manager.Reset<T>();
        }

        #endregion
    }
}
